CN212113310U - Wire harness and vehicle-mounted system - Google Patents

Abstract

The utility model discloses a pencil and on-vehicle system, the pencil includes: the insulation layer is electrically insulated from the outer shielding layer; the outer shielding layer is attached to the outer insulating layer and is positioned in the outer insulating layer; the isolation layer is positioned in the outer shielding layer and axially divides a wire harness space enclosed by the outer shielding layer into a plurality of axially-through first line spaces; wherein the first line space is used for accommodating cables. The vehicle-mounted system includes: a cable installed within a wire harness provided by the present invention; one or more in-vehicle devices; and the signal processing equipment is connected with the vehicle-mounted equipment through the cable and is used for processing the signal transmitted by the vehicle-mounted equipment through the cable.

Description

Wire harness and vehicle-mounted system

Technical Field

The utility model relates to an on-vehicle pencil and on-vehicle system especially relate to a pencil and on-vehicle system.

Background

A Vehicle-mounted information entertainment system (IVI for short) is a Vehicle-mounted comprehensive information processing system formed by adopting a Vehicle-mounted special central processing unit and based on a Vehicle body bus system and internet service. The IVI can realize a series of applications including three-dimensional navigation, real-time road conditions, IPTV (Internet Protocol Television), auxiliary driving, fault detection, vehicle information, vehicle body control, mobile office, wireless communication, entertainment functions based on online and TSP (Telematics Service Provider) services, and greatly improves the vehicle electronization, networking and intelligence levels.

Intelligent information systems involve components in the system and communications between the components, as well as communications between the system and other parts of the vehicle. Thus requiring an additional set of cables to complete the connection. The existing method is that the wire harnesses are separately connected, each wire harness occupies a cable, and then the wire harnesses in the same direction are mutually bound by a thermal shrinkage sleeve or a plastic buckle. The information entertainment system has the common problems that signals in the information entertainment system have the characteristics of high speed, low amplitude, short transmission distance, easiness in interference and the like.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a pencil and on-vehicle system.

The embodiment of the utility model provides a technical scheme is so realized:

in a first aspect, an embodiment of the present invention provides a wire harness, the wire harness includes:

the insulation layer is electrically insulated from the outer shielding layer;

wherein,

the outer shielding layer is attached to the outer insulating layer and is positioned in the outer insulating layer;

the isolation layer is positioned in the outer shielding layer and axially divides a wire harness space enclosed by the outer shielding layer into a plurality of axially-through first line spaces; wherein the first line space is used for accommodating cables.

In the above aspect, the wire harness further includes:

the inner side of the inner insulating layer is provided with a second line space which penetrates along the axial direction;

the outer shielding layer, the isolation layer and the outer side of the inner insulating layer form the first circuit space;

the second line space is used for accommodating cables.

In the above aspect, the wire harness includes a plurality of segments;

a signal repeater is arranged between two adjacent sections of wire harnesses;

the signal repeater is used for signal repeating and amplifying and is provided with connectors connected with cables positioned in two adjacent sections of wire harnesses.

In the scheme, the outer shielding layer is connected with the zero potential of the power supply equipment; the cable in the second line space is connected to a positive potential of the power supply device.

In the above solution, the first line space and/or the second line space is used for placing a main cable;

one or more openings are arranged on the outer shielding layer and the outer insulating layer of the wire harness in alignment; the opening is used for being connected with a branch line connected with the main cable.

In a second aspect, an embodiment of the present invention provides an on-board system, including:

the cable is installed in the wiring harness provided by one or more of the technical schemes;

one or more in-vehicle devices;

and the signal processing equipment is connected with the vehicle-mounted equipment through the cable and is used for processing the signal transmitted by the vehicle-mounted equipment through the cable.

In the above aspect, the cable includes:

a main cable for communication connection between a plurality of the in-vehicle devices;

and the branch cable is used for communication connection between the vehicle-mounted equipment and the main cable.

In the above aspect, the main cable located in the second space includes: one or more main cables having a power supply function.

In the above aspect, the processing apparatus includes:

the device comprises a modulator, an adder, a demodulator, a band-pass filter and a band-stop filter;

wherein the band-stop filter is connected to the main cable;

the modulator, the adder, the demodulator and the band-pass filter are connected to the branch cable.

In the above solution, the outer covering of the cable comprises an insulating layer and/or a shielding layer.

The utility model provides an on-vehicle pencil, include: the cable comprises an outer insulating layer, an outer shielding layer, a cable and an isolating layer for electrical isolation; the outer shielding layer is attached to the outer insulating layer and is positioned in the outer insulating layer; the isolation layer is positioned in the outer shielding layer and axially divides a wire harness space enclosed by the outer shielding layer into a plurality of axially-through first line spaces; wherein, first circuit space is used for holding the cable, the utility model discloses to pencil route characteristics in on-vehicle infotainment system, through the structure of redesign pencil, carry out electrical isolation to the cable in the pencil, the effectual signal interference who prevents between the cable.

The utility model provides an on-vehicle system, include: a cable installed in the wire harness provided by the utility model; one or more in-vehicle devices; signal processing equipment, through the cable with the mobile unit is connected, is used for handling the mobile unit passes through the signal of cable transmission, the utility model discloses according to the characteristics that the interior circuit is complicated of car, handle and adopt specific pencil structure through the transmission signal to the cable, reduce the cable quantity of on-vehicle system and the complexity that the line was walked to the cable, improved the transmission effect of on-vehicle system signal, make on-vehicle signal can carry out the rapid transit, improved on-vehicle signal amplitude and transmission distance, reduced the mutual interference of on-vehicle signal.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of a wire harness according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of another wiring harness provided in an embodiment of the present invention;

fig. 3 is a schematic diagram of an application of a wire harness in an on-board system according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an on-board system provided in an embodiment of the present invention;

fig. 5 is a frame diagram of an apparatus branch according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description that follows, references to the terms "first", "second", and the like, are intended merely to distinguish similar objects and not necessarily to denote a particular order, but rather, the terms "first", "second", and the like may be used interchangeably with the order specified, if the context allows, to distinguish one embodiment of the invention from another, except as may be illustrated and described herein.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terminology used herein is for the purpose of describing embodiments of the invention only and is not intended to be limiting of the invention.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic cross-sectional structure diagram of a wire harness according to an example of the present invention, as shown in fig. 1, the wire harness includes:

an outer insulating layer 101, an outer shield layer 102, and an isolation layer 103 for electrical isolation;

wherein,

the outer shielding layer 102 is attached to the outer insulating layer 101 and is located in the outer insulating layer 101;

an isolation layer 103 located inside the outer shield layer 102 and axially dividing a wire harness space surrounded by the outer shield layer 102 into a plurality of axially penetrating first line spaces 104; wherein the first line space 104 is used to accommodate the cable 107.

Specifically, as shown in fig. 2, the wire harness further includes:

an inner insulating layer 105 having a second line space 106 penetrating in the axial direction inside;

the outer shield layer 102, the isolation layer 103, and the inner insulating layer 105 form the first line space 104.

The second line space 106 for accommodating cables.

Specifically, the cable in the second line space is connected to a positive potential of the power supply device.

Specifically, the first line space and/or the second line space is used for placing a main cable; one or more openings are arranged on the outer shielding layer and the outer insulating layer of the wire harness in alignment; the opening is used for connecting a branch cable connected with the main cable.

In the present embodiment, the outer insulating layer 101 serves to protect the interior of the wire harness from mechanical damage and chemical corrosion, from moisture by contact with water vapor, to enhance the mechanical strength and to extend the service life of the wire harness, and has an insulating and insulating function. The outer insulating layer 101 is generally made of an insulating material such as polyethylene or rubber. The outer shield 102 is usually made of copper or copper wire. The outer shielding layer 102 is connected to the zero potential of the power supply device, and mainly plays a role in shielding an electric field. The isolation layer 103 is connected to the shielding layer for electrically isolating the first circuit space, and generally employs a metal material such as aluminum foil. The inner insulating layer 105 has an insulating function. The cable in the second line space is connected to the vehicle level +12V supply.

In this embodiment, the plurality of isolation layers may divide a space formed outside the outer shield layer and the inner insulating layer into a plurality of first line spaces penetrating in the axial direction. For example, a circular pencil can be divided into 6 first circuit spaces, also can be divided into other arbitrary number first circuit spaces, and every first circuit space can hold a class of circuit, and for example the cable wire of car machine to whole car speaker can occupy a first circuit space, and the cable wire of car machine to display screen can occupy another first circuit space. The cables in different first circuit spaces can not generate mutual signal interference, and the outer cladding of each cable comprises an insulating layer.

The opening on the outer insulating layer is provided with insulating elastic foam, so that after the branch cable is inserted, the elastic foam can be folded, and an insulating effect is achieved.

The opening on the shielding layer is provided with the conductive elastic foam, so that after the branch cable is inserted, the elastic foam can be folded, and the shielding effect is realized at the opening.

In some embodiments, the wiring harness includes a plurality of segments;

a signal repeater is arranged between two adjacent sections of wire harnesses;

the signal repeater is used for signal repeating and amplifying and is provided with connectors connected with cables positioned in two adjacent sections of wire harnesses.

In this embodiment, the cable in the second line space penetrates through the entire wire harness, and is connected to the power supply and the ground of the entire vehicle, so as to supply power to the relay and other devices. The signal repeater can be directly connected with the cable in the second line space to realize the supply of the power supply without additionally adding the cable for connecting the power supply. When the cable signal in the first line space in the cable harness needs to be relayed, the signal repeater is connected with the cable needing to be relayed, and relays and amplifies the signal in the cable needing to be relayed, so that the transmission distance of the signal in the cable is increased, the transmission quality of the signal is improved, and the problem of excessive attenuation of the signal in the transmission process is solved.

Fig. 3 is a schematic diagram of an application of a wire harness provided in the present embodiment in an on-vehicle system, as shown in the figure,

the entire harness extends through a plurality of onboard devices, such as device A301, device B302, device C303, and device D304. In this example, device a has a line to connect device D and device B has a line to connect device C. The whole wire harness is divided into 3 sections, namely a first section of wire harness 308, a second section of wire harness 310 and a third section of wire harness 311, and the wire harness core 309 is a cable in the second line space 106 and penetrates through the whole wire harness. The first line space of the wire harness is divided into 3 sections, and the middle of each adjacent 2 sections is open for the entry and exit of cables. The repeater 305 is located between the first section of wiring harness 308 and the second section of wiring harness 310. For example: the device A to the device D need to pass through the first section of the wire harness 308 and the second section of the wire harness 310, and the device B to the device C need to pass through the second section of the wire harness 310 and the third section of the wire harness 311. Where the second wire harness 310 carries both device a to device D cables and device B to device C cables. And the two types of cables respectively pass through different first circuit spaces in the second section of wiring harness 310 and are electrically isolated by the isolation layer 103 in the first circuit space in the second section of wiring harness 310, so that the two types of cables cannot influence each other. The signal transmission distance between the device a and the device D is very limited, and the attenuation is very large after passing through the two wire harnesses, and a signal repeater 305 is added between the signal transmission of the device a and the signal transmission of the device D. After passing through the first segment of wiring harness 308, the signal of the device a firstly enters the repeater 305 for repeating amplification, then is transmitted to the device D through the second segment of wiring harness 310, and the situation of short signal transmission distance caused by signal attenuation is reduced through the repeating amplification effect of the relay. And the power supply for the repeater 305 may be directly connected from the harness core 309 of the wiring harness.

The example of the utility model provides a pair of vehicle-mounted system, vehicle-mounted system includes:

the cable is installed in the wiring harness provided by one or more of the technical schemes;

one or more in-vehicle devices;

and the signal processing equipment is connected with the vehicle-mounted equipment through the cable and is used for processing the signal transmitted by the vehicle-mounted equipment through the cable.

In some embodiments, the cable comprises:

a main cable for communication connection between a plurality of the in-vehicle devices;

and the branch cable is used for communication connection between the vehicle-mounted equipment and the main cable.

In some embodiments, the main cable located in the second space includes: one or more main cables having a power supply function.

Specifically, as shown in the figure, the processing device includes:

the device comprises a modulator, an adder, a demodulator, a band-pass filter and a band-stop filter;

wherein the band-stop filter is connected to the main cable;

the modulator, the adder, the demodulator and the band-pass filter are connected to the branch cable.

In some embodiments, the outer covering of the cable comprises an insulating layer and/or a shielding layer.

One specific example is provided below in connection with the above embodiments:

as shown in fig. 4, the present example provides a schematic structural diagram of an in-vehicle system, including:

device a 401, device B402, device C403, device D404, main cable 408, device branch 405 on which device a is mounted, device branch 406 on which device B is mounted, and cable protective and shielding jacket 407

In this example, the device branch is used to connect the device to the main cable 408, the device C and the device D are respectively connected to two ends of the main cable 408, and the device a and the device B are respectively connected to the main cable 408 through the device branch 405 and the device branch 406. The communication signal between the device a and the device B may be transmitted on the main cable 408 after being processed by the signal processing device in the device branch, and at this time, the communication signal between the device a and the device B and the communication signal between the device C and the device D may be transmitted on the main cable 408.

Specifically, the equipment branch comprises a branch cable for connecting the equipment with the main cable and a part of the main cable connected with the branch cable, and the equipment branch is internally provided with signal processing equipment. Fig. 5 is a block diagram of a branch of the apparatus, as shown in fig. 5:

501: device A (or device B)

502: equipment branch

503: main cable

504: modulator A

505: adder A

506: demodulator A

507: band-pass filter A

508: band elimination filter A

509: branch cable

The modulator A, the adder A, the demodulator A and the band-pass filter A are all connected to the branch cable, and the band-stop filter A is connected to the main cable. When the device a accesses the main cable through the device branch, the signal of the device a is modulated to a specific frequency by the modulator a, and is coupled into the main cable line by the adder a. When the device a receives the modulated signal sent by the device B, the signal received by the device a needs to be extracted by the band-pass filter from the signal of the frequency band after the modulation of the device B, and the signal sent by other devices is filtered out, and then is resolved and restored by the demodulator a. A band elimination filter a is arranged on the main cable in the equipment branch for filtering out the signal input through the branch cable 509 in the main cable, so as to reduce the interference to other parts of the cable.

In the embodiment, the specific wire harness structure is adopted for installing the cable and processing the cable signal through the signal processing device, so that on one hand, the multiplexing of the frequency space of the cable is realized, more than two paths of signals can be transmitted on the same cable, and the number of cables in the vehicle-mounted system and the wiring complexity are reduced; on the other hand, the transmission effect of the vehicle-mounted system signal is improved, the vehicle-mounted signal can be rapidly transmitted, the amplitude and the transmission distance of the vehicle-mounted signal are improved, and the mutual interference of the vehicle-mounted signal is reduced.

In the several embodiments provided in the present invention, it should be understood that the above-described embodiments of the apparatus are only illustrative embodiments, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A wire harness, characterized by comprising:

the insulation layer is electrically insulated from the outer shielding layer;

wherein,

the outer shielding layer is attached to the outer insulating layer and is positioned in the outer insulating layer;

the isolation layer is positioned in the outer shielding layer and axially divides a wire harness space enclosed by the outer shielding layer into a plurality of axially-through first line spaces; wherein the first line space is used for accommodating cables.

2. The wire harness according to claim 1, further comprising:

the inner side of the inner insulating layer is provided with a second line space which penetrates along the axial direction;

the outer shielding layer, the isolation layer and the outer side of the inner insulating layer form the first circuit space;

the second line space is used for accommodating cables.

3. The wire harness of claim 1, wherein the wire harness comprises a plurality of segments;

a signal repeater is arranged between two adjacent sections of wire harnesses;

the signal repeater is used for signal repeating and amplifying and is provided with connectors connected with cables positioned in two adjacent sections of wire harnesses.

4. The wire harness of claim 2, wherein the outer shield layer is connected to a zero potential of a power supply device; the cable in the second line space is connected to a positive potential of the power supply device.

5. The wire harness according to claim 2 or 4,

the first line space and/or the second line space are used for placing a main cable;

one or more openings are arranged on the outer shielding layer and the outer insulating layer of the wire harness in alignment; the opening is used for connecting a branch cable connected with the main cable.

6. An in-vehicle system, comprising:

a cable mounted within the wiring harness provided in any one of claims 1 to 5;

one or more in-vehicle devices;

and the signal processing equipment is connected with the vehicle-mounted equipment through the cable and is used for processing the signal transmitted by the vehicle-mounted equipment through the cable.

7. The system of claim 6, wherein the cable comprises:

a main cable for communication connection between a plurality of the in-vehicle devices;

and the branch cable is used for communication connection between the vehicle-mounted equipment and the main cable.

8. The system of claim 7, wherein the main cable located in the second space comprises: one or more main cables having a power supply function.

9. The system of claim 7, wherein the signal processing device comprises:

the device comprises a modulator, an adder, a demodulator, a band-pass filter and a band-stop filter;

wherein the band-stop filter is connected to the main cable;

the modulator, the adder, the demodulator and the band-pass filter are connected to the branch cable.

10. The system according to any one of claims 6 to 9, wherein the outer covering of the cable comprises an insulating layer and/or a shielding layer.

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